Stephen Douglas Kelley is CEO & President at AMKOR TECHNOLOGY, INC. (AMKR). They have made 14 open-market trades across 2 companies since 2010, most recently 2026-05-20.
CIK 0001443674
4 open-market purchases totalling $2.5M since 2013, against 10 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AEIS | 80,376 | $19.1M |
| AMKR | 136,200 | $5.7M |
| CREE | 30,153 | $2.4M |
| ONTO | 6,384 | $1.4M |
| Total | $28.6M |
Shares reported on the most recent Form 4, priced at the 2026-05-22 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AEIS | SELL | 2026-03-10 | 2026-03-12 | $316.62 | $15.8M | +14.9% | +22.2% | -0.7% |
| AEIS | BUY | 2021-08-13 | 2021-08-17 | $85.85 | $1.0M | +8.2% | +2.7% | +7.7% |
| AEIS | BUY | 2021-05-11 | 2021-05-11 | $85.00 | $497K | +11.8% | +17.3% | +6.1% |
| AMKR | BUY | 2018-12-10 | 2018-12-12 | $6.33 | $949K | -12.6% | +13.2% | +32.7% |
| AMKR | SELL | 2017-06-08 | 2017-06-12 | $12.11 | $2.6M | -5.7% | -9.7% | -19.0% |
| AMKR | SELL | 2016-11-22 | 2016-11-23 | $12.22 | $2.1M | -7.6% | -9.6% | -15.2% |
| AMKR | SELL | 2016-11-17 | 2016-11-18 | $11.82 | $233K | -13.7% | -12.5% | -19.3% |
| AMKR | SELL | 2016-11-15 | 2016-11-16 | $11.30 | $1.1M | +4.6% | -6.7% | -16.4% |
| AMKR | SELL | 2016-11-11 | 2016-11-15 | $11.41 | $1.2M | +7.3% | -2.3% | -7.4% |
| AMKR | SELL | 2016-11-11 | 2016-11-15 | $11.45 | $1.7M | +7.3% | -2.3% | -7.4% |
| AMKR | SELL | 2016-11-09 | 2016-11-10 | $11.02 | $1.1M | +7.7% | -4.7% | -14.0% |
| AMKR | SELL | 2016-11-04 | 2016-11-08 | $10.45 | $1.0M | +13.5% | +6.7% | -6.4% |
| AMKR | SELL | 2016-11-04 | 2016-11-08 | $10.67 | $2.1M | +13.5% | +6.7% | -6.4% |
| AMKR | BUY | 2013-11-26 | 2014-02-25 | $5.93 | $18K | -5.2% | +1.3% | +1.3% |
| CREE | SELL · 10b5-1 | 2010-11-08 | 2010-11-10 | $55.17 | $793K | -7.7% | +2.2% | +2.2% |
| CREE | SELL · 10b5-1 | 2010-10-22 | 2010-10-25 | $49.58 | $1.3M | -7.7% | +2.2% | +2.2% |
| CREE | SELL · 10b5-1 | 2010-01-21 | 2010-01-25 | $62.33 | $1.4M | -7.7% | +2.2% | +2.2% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.